Home / 430,897,728.83-646,437,381.17-139,742,148.95

Finding the Fourth Proportional to 430,897,728.83, 646,437,381.17 and 139,742,148.95

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Solution

The fourth proportional to 430,897,728.83, 646,437,381.17 and 139,742,148.95 is: 209,642,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,897,728.83 : 646,437,381.17 = 139,742,148.95 : x
  2. Step 2: Convert to fraction form
    430,897,728.83/646,437,381.17 = 139,742,148.95/x
  3. Step 3: Cross multiply
    430,897,728.83x = 646,437,381.17 × 139,742,148.95
  4. Step 4: Simplify right side
    430,897,728.83x = 90,334,548,806,306,048
  5. Step 5: Solve for x
    x = 90,334,548,806,306,048/430,897,728.83
  6. Step 6: Final answer
    x = 209,642,666.37

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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.