Home / 500,096,011.50-690,132,495.87-280,079,437.50

Finding the Fourth Proportional to 500,096,011.50, 690,132,495.87 and 280,079,437.50

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Solution

The fourth proportional to 500,096,011.50, 690,132,495.87 and 280,079,437.50 is: 386,509,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,096,011.50 : 690,132,495.87 = 280,079,437.50 : x
  2. Step 2: Convert to fraction form
    500,096,011.50/690,132,495.87 = 280,079,437.50/x
  3. Step 3: Cross multiply
    500,096,011.50x = 690,132,495.87 × 280,079,437.50
  4. Step 4: Simplify right side
    500,096,011.50x = 193,291,921,243,740,672
  5. Step 5: Solve for x
    x = 193,291,921,243,740,672/500,096,011.50
  6. Step 6: Final answer
    x = 386,509,623.75

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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.