Home / 772,105.70-1,157,618.55-456,400.10

Finding the Fourth Proportional to 772,105.70, 1,157,618.55 and 456,400.10

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Solution

The fourth proportional to 772,105.70, 1,157,618.55 and 456,400.10 is: 684,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,105.70 : 1,157,618.55 = 456,400.10 : x
  2. Step 2: Convert to fraction form
    772,105.70/1,157,618.55 = 456,400.10/x
  3. Step 3: Cross multiply
    772,105.70x = 1,157,618.55 × 456,400.10
  4. Step 4: Simplify right side
    772,105.70x = 528,337,221,981.86
  5. Step 5: Solve for x
    x = 528,337,221,981.86/772,105.70
  6. Step 6: Final answer
    x = 684,280.95

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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.