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Finding the Fourth Proportional to 586,444.90, 878,630.55 and 520,089.70

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Solution

The fourth proportional to 586,444.90, 878,630.55 and 520,089.70 is: 779,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,444.90 : 878,630.55 = 520,089.70 : x
  2. Step 2: Convert to fraction form
    586,444.90/878,630.55 = 520,089.70/x
  3. Step 3: Cross multiply
    586,444.90x = 878,630.55 × 520,089.70
  4. Step 4: Simplify right side
    586,444.90x = 456,966,699,160.34
  5. Step 5: Solve for x
    x = 456,966,699,160.34/586,444.90
  6. Step 6: Final answer
    x = 779,215.06

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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.