Home / 870,152.47-1,305,264.11-414,509.49

Finding the Fourth Proportional to 870,152.47, 1,305,264.11 and 414,509.49

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Solution

The fourth proportional to 870,152.47, 1,305,264.11 and 414,509.49 is: 621,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,152.47 : 1,305,264.11 = 414,509.49 : x
  2. Step 2: Convert to fraction form
    870,152.47/1,305,264.11 = 414,509.49/x
  3. Step 3: Cross multiply
    870,152.47x = 1,305,264.11 × 414,509.49
  4. Step 4: Simplify right side
    870,152.47x = 541,044,358,478.86
  5. Step 5: Solve for x
    x = 541,044,358,478.86/870,152.47
  6. Step 6: Final answer
    x = 621,781.10

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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.