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Finding the Fourth Proportional to 555,113.40, 832,475.70 and 288,785.40

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Solution

The fourth proportional to 555,113.40, 832,475.70 and 288,785.40 is: 433,076.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,113.40 : 832,475.70 = 288,785.40 : x
  2. Step 2: Convert to fraction form
    555,113.40/832,475.70 = 288,785.40/x
  3. Step 3: Cross multiply
    555,113.40x = 832,475.70 × 288,785.40
  4. Step 4: Simplify right side
    555,113.40x = 240,406,828,014.78
  5. Step 5: Solve for x
    x = 240,406,828,014.78/555,113.40
  6. Step 6: Final answer
    x = 433,076.97

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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.