Home / 390,861,731.47-586,312,775.94-99,731,401.87

Finding the Fourth Proportional to 390,861,731.47, 586,312,775.94 and 99,731,401.87

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Solution

The fourth proportional to 390,861,731.47, 586,312,775.94 and 99,731,401.87 is: 149,602,251.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,861,731.47 : 586,312,775.94 = 99,731,401.87 : x
  2. Step 2: Convert to fraction form
    390,861,731.47/586,312,775.94 = 99,731,401.87/x
  3. Step 3: Cross multiply
    390,861,731.47x = 586,312,775.94 × 99,731,401.87
  4. Step 4: Simplify right side
    390,861,731.47x = 58,473,795,078,787,416
  5. Step 5: Solve for x
    x = 58,473,795,078,787,416/390,861,731.47
  6. Step 6: Final answer
    x = 149,602,251.57

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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.