Home / 1,281,418,874.52-1,768,426,707.33-716,870,078.16

Finding the Fourth Proportional to 1,281,418,874.52, 1,768,426,707.33 and 716,870,078.16

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Solution

The fourth proportional to 1,281,418,874.52, 1,768,426,707.33 and 716,870,078.16 is: 989,319,118.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,418,874.52 : 1,768,426,707.33 = 716,870,078.16 : x
  2. Step 2: Convert to fraction form
    1,281,418,874.52/1,768,426,707.33 = 716,870,078.16/x
  3. Step 3: Cross multiply
    1,281,418,874.52x = 1,768,426,707.33 × 716,870,078.16
  4. Step 4: Simplify right side
    1,281,418,874.52x = 1,267,732,191,903,888,384
  5. Step 5: Solve for x
    x = 1,267,732,191,903,888,384/1,281,418,874.52
  6. Step 6: Final answer
    x = 989,319,118.92

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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.