Home / 520,711,980.47-781,020,140.25-175,668,596.81

Finding the Fourth Proportional to 520,711,980.47, 781,020,140.25 and 175,668,596.81

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Solution

The fourth proportional to 520,711,980.47, 781,020,140.25 and 175,668,596.81 is: 263,486,759.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,711,980.47 : 781,020,140.25 = 175,668,596.81 : x
  2. Step 2: Convert to fraction form
    520,711,980.47/781,020,140.25 = 175,668,596.81/x
  3. Step 3: Cross multiply
    520,711,980.47x = 781,020,140.25 × 175,668,596.81
  4. Step 4: Simplify right side
    520,711,980.47x = 137,200,712,117,744,128
  5. Step 5: Solve for x
    x = 137,200,712,117,744,128/520,711,980.47
  6. Step 6: Final answer
    x = 263,486,759.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.