Home / 1,281,418,861.22-1,768,426,689.84-716,870,065

Finding the Fourth Proportional to 1,281,418,861.22, 1,768,426,689.84 and 716,870,065

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Solution

The fourth proportional to 1,281,418,861.22, 1,768,426,689.84 and 716,870,065 is: 989,319,101.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,418,861.22 : 1,768,426,689.84 = 716,870,065 : x
  2. Step 2: Convert to fraction form
    1,281,418,861.22/1,768,426,689.84 = 716,870,065/x
  3. Step 3: Cross multiply
    1,281,418,861.22x = 1,768,426,689.84 × 716,870,065
  4. Step 4: Simplify right side
    1,281,418,861.22x = 1,267,732,156,093,335,552
  5. Step 5: Solve for x
    x = 1,267,732,156,093,335,552/1,281,418,861.22
  6. Step 6: Final answer
    x = 989,319,101.24

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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.