Home / 909,919.56-1,255,701.78-502,039.20

Finding the Fourth Proportional to 909,919.56, 1,255,701.78 and 502,039.20

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Solution

The fourth proportional to 909,919.56, 1,255,701.78 and 502,039.20 is: 692,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,919.56 : 1,255,701.78 = 502,039.20 : x
  2. Step 2: Convert to fraction form
    909,919.56/1,255,701.78 = 502,039.20/x
  3. Step 3: Cross multiply
    909,919.56x = 1,255,701.78 × 502,039.20
  4. Step 4: Simplify right side
    909,919.56x = 630,411,517,069.78
  5. Step 5: Solve for x
    x = 630,411,517,069.78/909,919.56
  6. Step 6: Final answer
    x = 692,821.15

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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.