Home / 838,229,693.78-1,156,818,115.19-485,896,645.46

Finding the Fourth Proportional to 838,229,693.78, 1,156,818,115.19 and 485,896,645.46

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Solution

The fourth proportional to 838,229,693.78, 1,156,818,115.19 and 485,896,645.46 is: 670,572,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,229,693.78 : 1,156,818,115.19 = 485,896,645.46 : x
  2. Step 2: Convert to fraction form
    838,229,693.78/1,156,818,115.19 = 485,896,645.46/x
  3. Step 3: Cross multiply
    838,229,693.78x = 1,156,818,115.19 × 485,896,645.46
  4. Step 4: Simplify right side
    838,229,693.78x = 562,094,041,578,180,864
  5. Step 5: Solve for x
    x = 562,094,041,578,180,864/838,229,693.78
  6. Step 6: Final answer
    x = 670,572,810.47

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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.