Home / 985,402.48-1,360,225.20-645,892.60

Finding the Fourth Proportional to 985,402.48, 1,360,225.20 and 645,892.60

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Solution

The fourth proportional to 985,402.48, 1,360,225.20 and 645,892.60 is: 891,574.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,402.48 : 1,360,225.20 = 645,892.60 : x
  2. Step 2: Convert to fraction form
    985,402.48/1,360,225.20 = 645,892.60/x
  3. Step 3: Cross multiply
    985,402.48x = 1,360,225.20 × 645,892.60
  4. Step 4: Simplify right side
    985,402.48x = 878,559,391,013.52
  5. Step 5: Solve for x
    x = 878,559,391,013.52/985,402.48
  6. Step 6: Final answer
    x = 891,574.16

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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.