Home / 627,377.19-865,778.74-340,897.20

Finding the Fourth Proportional to 627,377.19, 865,778.74 and 340,897.20

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Solution

The fourth proportional to 627,377.19, 865,778.74 and 340,897.20 is: 470,437.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,377.19 : 865,778.74 = 340,897.20 : x
  2. Step 2: Convert to fraction form
    627,377.19/865,778.74 = 340,897.20/x
  3. Step 3: Cross multiply
    627,377.19x = 865,778.74 × 340,897.20
  4. Step 4: Simplify right side
    627,377.19x = 295,141,546,581.04
  5. Step 5: Solve for x
    x = 295,141,546,581.04/627,377.19
  6. Step 6: Final answer
    x = 470,437.16

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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.