Home / 922,641.36-1,384,508.60-390,133.20

Finding the Fourth Proportional to 922,641.36, 1,384,508.60 and 390,133.20

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Solution

The fourth proportional to 922,641.36, 1,384,508.60 and 390,133.20 is: 585,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,641.36 : 1,384,508.60 = 390,133.20 : x
  2. Step 2: Convert to fraction form
    922,641.36/1,384,508.60 = 390,133.20/x
  3. Step 3: Cross multiply
    922,641.36x = 1,384,508.60 × 390,133.20
  4. Step 4: Simplify right side
    922,641.36x = 540,142,770,545.52
  5. Step 5: Solve for x
    x = 540,142,770,545.52/922,641.36
  6. Step 6: Final answer
    x = 585,430.91

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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.