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Finding the Fourth Proportional to 708,908.70, 1,063,363.05 and 390,044.10

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Solution

The fourth proportional to 708,908.70, 1,063,363.05 and 390,044.10 is: 585,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,908.70 : 1,063,363.05 = 390,044.10 : x
  2. Step 2: Convert to fraction form
    708,908.70/1,063,363.05 = 390,044.10/x
  3. Step 3: Cross multiply
    708,908.70x = 1,063,363.05 × 390,044.10
  4. Step 4: Simplify right side
    708,908.70x = 414,758,483,810.51
  5. Step 5: Solve for x
    x = 414,758,483,810.51/708,908.70
  6. Step 6: Final answer
    x = 585,066.15

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Similar ratio
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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.