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Finding the Fourth Proportional to 659,876.25, 910,631.66 and 358,070.25

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Solution

The fourth proportional to 659,876.25, 910,631.66 and 358,070.25 is: 494,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,876.25 : 910,631.66 = 358,070.25 : x
  2. Step 2: Convert to fraction form
    659,876.25/910,631.66 = 358,070.25/x
  3. Step 3: Cross multiply
    659,876.25x = 910,631.66 × 358,070.25
  4. Step 4: Simplify right side
    659,876.25x = 326,070,104,363.76
  5. Step 5: Solve for x
    x = 326,070,104,363.76/659,876.25
  6. Step 6: Final answer
    x = 494,138.26

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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.