Home / 786,420.95-1,085,250.56-442,256.77

Finding the Fourth Proportional to 786,420.95, 1,085,250.56 and 442,256.77

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Solution

The fourth proportional to 786,420.95, 1,085,250.56 and 442,256.77 is: 610,308.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,420.95 : 1,085,250.56 = 442,256.77 : x
  2. Step 2: Convert to fraction form
    786,420.95/1,085,250.56 = 442,256.77/x
  3. Step 3: Cross multiply
    786,420.95x = 1,085,250.56 × 442,256.77
  4. Step 4: Simplify right side
    786,420.95x = 479,959,405,095.01
  5. Step 5: Solve for x
    x = 479,959,405,095.01/786,420.95
  6. Step 6: Final answer
    x = 610,308.52

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Double scale
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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.