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Finding the Fourth Proportional to 604,875.20, 907,312.80 and 289,947.20

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Solution

The fourth proportional to 604,875.20, 907,312.80 and 289,947.20 is: 434,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,875.20 : 907,312.80 = 289,947.20 : x
  2. Step 2: Convert to fraction form
    604,875.20/907,312.80 = 289,947.20/x
  3. Step 3: Cross multiply
    604,875.20x = 907,312.80 × 289,947.20
  4. Step 4: Simplify right side
    604,875.20x = 263,072,805,884.16
  5. Step 5: Solve for x
    x = 263,072,805,884.16/604,875.20
  6. Step 6: Final answer
    x = 434,920.80

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Similar ratio
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1.5x scale

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.