Home / 742,530.12-1,024,691.40-402,998.40

Finding the Fourth Proportional to 742,530.12, 1,024,691.40 and 402,998.40

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Solution

The fourth proportional to 742,530.12, 1,024,691.40 and 402,998.40 is: 556,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,530.12 : 1,024,691.40 = 402,998.40 : x
  2. Step 2: Convert to fraction form
    742,530.12/1,024,691.40 = 402,998.40/x
  3. Step 3: Cross multiply
    742,530.12x = 1,024,691.40 × 402,998.40
  4. Step 4: Simplify right side
    742,530.12x = 412,948,994,693.76
  5. Step 5: Solve for x
    x = 412,948,994,693.76/742,530.12
  6. Step 6: Final answer
    x = 556,137.70

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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.