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Finding the Fourth Proportional to 558,053.39, 770,140.04 and 316,340.69

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Solution

The fourth proportional to 558,053.39, 770,140.04 and 316,340.69 is: 436,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,053.39 : 770,140.04 = 316,340.69 : x
  2. Step 2: Convert to fraction form
    558,053.39/770,140.04 = 316,340.69/x
  3. Step 3: Cross multiply
    558,053.39x = 770,140.04 × 316,340.69
  4. Step 4: Simplify right side
    558,053.39x = 243,626,626,217.82
  5. Step 5: Solve for x
    x = 243,626,626,217.82/558,053.39
  6. Step 6: Final answer
    x = 436,565.08

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Double scale
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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.