Home / 813,888,836.40-1,220,907,904.20-268,631,569.20

Finding the Fourth Proportional to 813,888,836.40, 1,220,907,904.20 and 268,631,569.20

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Solution

The fourth proportional to 813,888,836.40, 1,220,907,904.20 and 268,631,569.20 is: 402,971,992.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,888,836.40 : 1,220,907,904.20 = 268,631,569.20 : x
  2. Step 2: Convert to fraction form
    813,888,836.40/1,220,907,904.20 = 268,631,569.20/x
  3. Step 3: Cross multiply
    813,888,836.40x = 1,220,907,904.20 × 268,631,569.20
  4. Step 4: Simplify right side
    813,888,836.40x = 327,974,406,153,929,280
  5. Step 5: Solve for x
    x = 327,974,406,153,929,280/813,888,836.40
  6. Step 6: Final answer
    x = 402,971,992.59

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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.