Home / 720,200,427.20-993,877,598.01-390,175,566.20

Finding the Fourth Proportional to 720,200,427.20, 993,877,598.01 and 390,175,566.20

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Solution

The fourth proportional to 720,200,427.20, 993,877,598.01 and 390,175,566.20 is: 538,442,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,200,427.20 : 993,877,598.01 = 390,175,566.20 : x
  2. Step 2: Convert to fraction form
    720,200,427.20/993,877,598.01 = 390,175,566.20/x
  3. Step 3: Cross multiply
    720,200,427.20x = 993,877,598.01 × 390,175,566.20
  4. Step 4: Simplify right side
    720,200,427.20x = 387,786,754,537,047,744
  5. Step 5: Solve for x
    x = 387,786,754,537,047,744/720,200,427.20
  6. Step 6: Final answer
    x = 538,442,827.71

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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.