Home / 390,861,730.47-586,312,774.44-99,731,400.87

Finding the Fourth Proportional to 390,861,730.47, 586,312,774.44 and 99,731,400.87

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Solution

The fourth proportional to 390,861,730.47, 586,312,774.44 and 99,731,400.87 is: 149,602,250.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,861,730.47 : 586,312,774.44 = 99,731,400.87 : x
  2. Step 2: Convert to fraction form
    390,861,730.47/586,312,774.44 = 99,731,400.87/x
  3. Step 3: Cross multiply
    390,861,730.47x = 586,312,774.44 × 99,731,400.87
  4. Step 4: Simplify right side
    390,861,730.47x = 58,473,794,342,877,536
  5. Step 5: Solve for x
    x = 58,473,794,342,877,536/390,861,730.47
  6. Step 6: Final answer
    x = 149,602,250.07

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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.