Home / 720,465,491.64-994,243,228.92-390,440,630.64

Finding the Fourth Proportional to 720,465,491.64, 994,243,228.92 and 390,440,630.64

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Solution

The fourth proportional to 720,465,491.64, 994,243,228.92 and 390,440,630.64 is: 538,808,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,465,491.64 : 994,243,228.92 = 390,440,630.64 : x
  2. Step 2: Convert to fraction form
    720,465,491.64/994,243,228.92 = 390,440,630.64/x
  3. Step 3: Cross multiply
    720,465,491.64x = 994,243,228.92 × 390,440,630.64
  4. Step 4: Simplify right side
    720,465,491.64x = 388,192,953,309,074,624
  5. Step 5: Solve for x
    x = 388,192,953,309,074,624/720,465,491.64
  6. Step 6: Final answer
    x = 538,808,531.17

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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.