Home / 515,771,569.72-711,758,089.72-280,819,535.32

Finding the Fourth Proportional to 515,771,569.72, 711,758,089.72 and 280,819,535.32

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Solution

The fourth proportional to 515,771,569.72, 711,758,089.72 and 280,819,535.32 is: 387,527,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,771,569.72 : 711,758,089.72 = 280,819,535.32 : x
  2. Step 2: Convert to fraction form
    515,771,569.72/711,758,089.72 = 280,819,535.32/x
  3. Step 3: Cross multiply
    515,771,569.72x = 711,758,089.72 × 280,819,535.32
  4. Step 4: Simplify right side
    515,771,569.72x = 199,875,576,015,421,280
  5. Step 5: Solve for x
    x = 199,875,576,015,421,280/515,771,569.72
  6. Step 6: Final answer
    x = 387,527,323.62

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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.