Home / 918,165.30-1,267,042.80-510,256.86

Finding the Fourth Proportional to 918,165.30, 1,267,042.80 and 510,256.86

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Solution

The fourth proportional to 918,165.30, 1,267,042.80 and 510,256.86 is: 704,140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,165.30 : 1,267,042.80 = 510,256.86 : x
  2. Step 2: Convert to fraction form
    918,165.30/1,267,042.80 = 510,256.86/x
  3. Step 3: Cross multiply
    918,165.30x = 1,267,042.80 × 510,256.86
  4. Step 4: Simplify right side
    918,165.30x = 646,517,280,613.61
  5. Step 5: Solve for x
    x = 646,517,280,613.61/918,165.30
  6. Step 6: Final answer
    x = 704,140.40

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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.