Home / 909,231.60-1,363,552.32-429,385.20

Finding the Fourth Proportional to 909,231.60, 1,363,552.32 and 429,385.20

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Solution

The fourth proportional to 909,231.60, 1,363,552.32 and 429,385.20 is: 643,938.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,231.60 : 1,363,552.32 = 429,385.20 : x
  2. Step 2: Convert to fraction form
    909,231.60/1,363,552.32 = 429,385.20/x
  3. Step 3: Cross multiply
    909,231.60x = 1,363,552.32 × 429,385.20
  4. Step 4: Simplify right side
    909,231.60x = 585,489,185,633.66
  5. Step 5: Solve for x
    x = 585,489,185,633.66/909,231.60
  6. Step 6: Final answer
    x = 643,938.45

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1.5x scale

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.