Home / 990,985.60-1,368,127.56-652,438

Finding the Fourth Proportional to 990,985.60, 1,368,127.56 and 652,438

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Solution

The fourth proportional to 990,985.60, 1,368,127.56 and 652,438 is: 900,738.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,985.60 : 1,368,127.56 = 652,438 : x
  2. Step 2: Convert to fraction form
    990,985.60/1,368,127.56 = 652,438/x
  3. Step 3: Cross multiply
    990,985.60x = 1,368,127.56 × 652,438
  4. Step 4: Simplify right side
    990,985.60x = 892,618,408,991.28
  5. Step 5: Solve for x
    x = 892,618,408,991.28/990,985.60
  6. Step 6: Final answer
    x = 900,738.02

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1.5x scale

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.