Home / 745,689.60-1,029,056.64-406,154.88

Finding the Fourth Proportional to 745,689.60, 1,029,056.64 and 406,154.88

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Solution

The fourth proportional to 745,689.60, 1,029,056.64 and 406,154.88 is: 560,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,689.60 : 1,029,056.64 = 406,154.88 : x
  2. Step 2: Convert to fraction form
    745,689.60/1,029,056.64 = 406,154.88/x
  3. Step 3: Cross multiply
    745,689.60x = 1,029,056.64 × 406,154.88
  4. Step 4: Simplify right side
    745,689.60x = 417,956,376,132.40
  5. Step 5: Solve for x
    x = 417,956,376,132.40/745,689.60
  6. Step 6: Final answer
    x = 560,496.45

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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.