Home / 691,924,987.10-954,855,865.31-390,573,729.50

Finding the Fourth Proportional to 691,924,987.10, 954,855,865.31 and 390,573,729.50

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Solution

The fourth proportional to 691,924,987.10, 954,855,865.31 and 390,573,729.50 is: 538,991,398.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,924,987.10 : 954,855,865.31 = 390,573,729.50 : x
  2. Step 2: Convert to fraction form
    691,924,987.10/954,855,865.31 = 390,573,729.50/x
  3. Step 3: Cross multiply
    691,924,987.10x = 954,855,865.31 × 390,573,729.50
  4. Step 4: Simplify right side
    691,924,987.10x = 372,941,616,442,349,184
  5. Step 5: Solve for x
    x = 372,941,616,442,349,184/691,924,987.10
  6. Step 6: Final answer
    x = 538,991,398.48

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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.