Home / 900,909.74-1,243,255.47-493,011.60

Finding the Fourth Proportional to 900,909.74, 1,243,255.47 and 493,011.60

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Solution

The fourth proportional to 900,909.74, 1,243,255.47 and 493,011.60 is: 680,356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,909.74 : 1,243,255.47 = 493,011.60 : x
  2. Step 2: Convert to fraction form
    900,909.74/1,243,255.47 = 493,011.60/x
  3. Step 3: Cross multiply
    900,909.74x = 1,243,255.47 × 493,011.60
  4. Step 4: Simplify right side
    900,909.74x = 612,939,361,962.45
  5. Step 5: Solve for x
    x = 612,939,361,962.45/900,909.74
  6. Step 6: Final answer
    x = 680,356.01

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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.