Home / 1,386,820.47-1,913,242.35-842,868.63

Finding the Fourth Proportional to 1,386,820.47, 1,913,242.35 and 842,868.63

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Solution

The fourth proportional to 1,386,820.47, 1,913,242.35 and 842,868.63 is: 1,162,812.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,820.47 : 1,913,242.35 = 842,868.63 : x
  2. Step 2: Convert to fraction form
    1,386,820.47/1,913,242.35 = 842,868.63/x
  3. Step 3: Cross multiply
    1,386,820.47x = 1,913,242.35 × 842,868.63
  4. Step 4: Simplify right side
    1,386,820.47x = 1,612,611,958,402.48
  5. Step 5: Solve for x
    x = 1,612,611,958,402.48/1,386,820.47
  6. Step 6: Final answer
    x = 1,162,812.34

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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.