Home / 1,038,854.40-1,558,281.60-407,788.80

Finding the Fourth Proportional to 1,038,854.40, 1,558,281.60 and 407,788.80

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Solution

The fourth proportional to 1,038,854.40, 1,558,281.60 and 407,788.80 is: 611,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,854.40 : 1,558,281.60 = 407,788.80 : x
  2. Step 2: Convert to fraction form
    1,038,854.40/1,558,281.60 = 407,788.80/x
  3. Step 3: Cross multiply
    1,038,854.40x = 1,558,281.60 × 407,788.80
  4. Step 4: Simplify right side
    1,038,854.40x = 635,449,783,726.08
  5. Step 5: Solve for x
    x = 635,449,783,726.08/1,038,854.40
  6. Step 6: Final answer
    x = 611,683.20

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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.