Home / 646,260,428.70-969,390,643.05-179,920,951.20

Finding the Fourth Proportional to 646,260,428.70, 969,390,643.05 and 179,920,951.20

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Solution

The fourth proportional to 646,260,428.70, 969,390,643.05 and 179,920,951.20 is: 269,881,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,260,428.70 : 969,390,643.05 = 179,920,951.20 : x
  2. Step 2: Convert to fraction form
    646,260,428.70/969,390,643.05 = 179,920,951.20/x
  3. Step 3: Cross multiply
    646,260,428.70x = 969,390,643.05 × 179,920,951.20
  4. Step 4: Simplify right side
    646,260,428.70x = 174,413,686,581,935,648
  5. Step 5: Solve for x
    x = 174,413,686,581,935,648/646,260,428.70
  6. Step 6: Final answer
    x = 269,881,426.80

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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.