Home / 1,182,125,401.95-1,631,340,432.29-646,278,221.51

Finding the Fourth Proportional to 1,182,125,401.95, 1,631,340,432.29 and 646,278,221.51

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Solution

The fourth proportional to 1,182,125,401.95, 1,631,340,432.29 and 646,278,221.51 is: 891,867,979.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182,125,401.95 : 1,631,340,432.29 = 646,278,221.51 : x
  2. Step 2: Convert to fraction form
    1,182,125,401.95/1,631,340,432.29 = 646,278,221.51/x
  3. Step 3: Cross multiply
    1,182,125,401.95x = 1,631,340,432.29 × 646,278,221.51
  4. Step 4: Simplify right side
    1,182,125,401.95x = 1,054,299,793,257,735,680
  5. Step 5: Solve for x
    x = 1,054,299,793,257,735,680/1,182,125,401.95
  6. Step 6: Final answer
    x = 891,867,979.08

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Double scale
Find fourth proportional to 1,182,125,402.95, 1,631,340,433.67 and 646,278,222.51
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.