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Finding the Fourth Proportional to 531,420.76, 732,945.54 and 340,452.28

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Solution

The fourth proportional to 531,420.76, 732,945.54 and 340,452.28 is: 469,558.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,420.76 : 732,945.54 = 340,452.28 : x
  2. Step 2: Convert to fraction form
    531,420.76/732,945.54 = 340,452.28/x
  3. Step 3: Cross multiply
    531,420.76x = 732,945.54 × 340,452.28
  4. Step 4: Simplify right side
    531,420.76x = 249,532,980,208.83
  5. Step 5: Solve for x
    x = 249,532,980,208.83/531,420.76
  6. Step 6: Final answer
    x = 469,558.21

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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.