Home / 690,669.86-953,126.08-400,337.52

Finding the Fourth Proportional to 690,669.86, 953,126.08 and 400,337.52

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Solution

The fourth proportional to 690,669.86, 953,126.08 and 400,337.52 is: 552,466.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,669.86 : 953,126.08 = 400,337.52 : x
  2. Step 2: Convert to fraction form
    690,669.86/953,126.08 = 400,337.52/x
  3. Step 3: Cross multiply
    690,669.86x = 953,126.08 × 400,337.52
  4. Step 4: Simplify right side
    690,669.86x = 381,572,131,114.52
  5. Step 5: Solve for x
    x = 381,572,131,114.52/690,669.86
  6. Step 6: Final answer
    x = 552,466.75

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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.