Home / 720,200,376.41-993,877,527.94-390,175,515.41

Finding the Fourth Proportional to 720,200,376.41, 993,877,527.94 and 390,175,515.41

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Solution

The fourth proportional to 720,200,376.41, 993,877,527.94 and 390,175,515.41 is: 538,442,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,200,376.41 : 993,877,527.94 = 390,175,515.41 : x
  2. Step 2: Convert to fraction form
    720,200,376.41/993,877,527.94 = 390,175,515.41/x
  3. Step 3: Cross multiply
    720,200,376.41x = 993,877,527.94 × 390,175,515.41
  4. Step 4: Simplify right side
    720,200,376.41x = 387,786,676,712,461,312
  5. Step 5: Solve for x
    x = 387,786,676,712,461,312/720,200,376.41
  6. Step 6: Final answer
    x = 538,442,757.62

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1.5x scale

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.