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Finding the Fourth Proportional to 500,368.42, 690,508.76 and 270,925.86

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Solution

The fourth proportional to 500,368.42, 690,508.76 and 270,925.86 is: 373,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,368.42 : 690,508.76 = 270,925.86 : x
  2. Step 2: Convert to fraction form
    500,368.42/690,508.76 = 270,925.86/x
  3. Step 3: Cross multiply
    500,368.42x = 690,508.76 × 270,925.86
  4. Step 4: Simplify right side
    500,368.42x = 187,076,679,640.53
  5. Step 5: Solve for x
    x = 187,076,679,640.53/500,368.42
  6. Step 6: Final answer
    x = 373,877.87

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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.