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Finding the Fourth Proportional to 675,312.32, 931,779.24 and 403,330.88

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Solution

The fourth proportional to 675,312.32, 931,779.24 and 403,330.88 is: 556,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,312.32 : 931,779.24 = 403,330.88 : x
  2. Step 2: Convert to fraction form
    675,312.32/931,779.24 = 403,330.88/x
  3. Step 3: Cross multiply
    675,312.32x = 931,779.24 × 403,330.88
  4. Step 4: Simplify right side
    675,312.32x = 375,815,340,834.93
  5. Step 5: Solve for x
    x = 375,815,340,834.93/675,312.32
  6. Step 6: Final answer
    x = 556,505.97

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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.