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Finding the Fourth Proportional to 456,427.60, 684,641.40 and 350,139.40

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Solution

The fourth proportional to 456,427.60, 684,641.40 and 350,139.40 is: 525,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,427.60 : 684,641.40 = 350,139.40 : x
  2. Step 2: Convert to fraction form
    456,427.60/684,641.40 = 350,139.40/x
  3. Step 3: Cross multiply
    456,427.60x = 684,641.40 × 350,139.40
  4. Step 4: Simplify right side
    456,427.60x = 239,719,929,011.16
  5. Step 5: Solve for x
    x = 239,719,929,011.16/456,427.60
  6. Step 6: Final answer
    x = 525,209.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.