Home / 838,445,520.35-1,157,039,806.49-456,970,990.91

Finding the Fourth Proportional to 838,445,520.35, 1,157,039,806.49 and 456,970,990.91

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Solution

The fourth proportional to 838,445,520.35, 1,157,039,806.49 and 456,970,990.91 is: 630,611,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,445,520.35 : 1,157,039,806.49 = 456,970,990.91 : x
  2. Step 2: Convert to fraction form
    838,445,520.35/1,157,039,806.49 = 456,970,990.91/x
  3. Step 3: Cross multiply
    838,445,520.35x = 1,157,039,806.49 × 456,970,990.91
  4. Step 4: Simplify right side
    838,445,520.35x = 528,733,626,885,979,840
  5. Step 5: Solve for x
    x = 528,733,626,885,979,840/838,445,520.35
  6. Step 6: Final answer
    x = 630,611,785.81

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Double scale
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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.