Home / 649,820.02-974,730.04-428,152.18

Finding the Fourth Proportional to 649,820.02, 974,730.04 and 428,152.18

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Solution

The fourth proportional to 649,820.02, 974,730.04 and 428,152.18 is: 642,228.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,820.02 : 974,730.04 = 428,152.18 : x
  2. Step 2: Convert to fraction form
    649,820.02/974,730.04 = 428,152.18/x
  3. Step 3: Cross multiply
    649,820.02x = 974,730.04 × 428,152.18
  4. Step 4: Simplify right side
    649,820.02x = 417,332,791,537.49
  5. Step 5: Solve for x
    x = 417,332,791,537.49/649,820.02
  6. Step 6: Final answer
    x = 642,228.28

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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.