Home / 921,461,818.80-1,382,192,728.20-307,966,328.40

Finding the Fourth Proportional to 921,461,818.80, 1,382,192,728.20 and 307,966,328.40

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Solution

The fourth proportional to 921,461,818.80, 1,382,192,728.20 and 307,966,328.40 is: 461,949,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,461,818.80 : 1,382,192,728.20 = 307,966,328.40 : x
  2. Step 2: Convert to fraction form
    921,461,818.80/1,382,192,728.20 = 307,966,328.40/x
  3. Step 3: Cross multiply
    921,461,818.80x = 1,382,192,728.20 × 307,966,328.40
  4. Step 4: Simplify right side
    921,461,818.80x = 425,668,819,644,933,120
  5. Step 5: Solve for x
    x = 425,668,819,644,933,120/921,461,818.80
  6. Step 6: Final answer
    x = 461,949,492.60

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Double scale
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Similar ratio
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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.