Home / 1,217,957,345.66-1,680,797,261.39-661,047,068.54

Finding the Fourth Proportional to 1,217,957,345.66, 1,680,797,261.39 and 661,047,068.54

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Solution

The fourth proportional to 1,217,957,345.66, 1,680,797,261.39 and 661,047,068.54 is: 912,253,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,957,345.66 : 1,680,797,261.39 = 661,047,068.54 : x
  2. Step 2: Convert to fraction form
    1,217,957,345.66/1,680,797,261.39 = 661,047,068.54/x
  3. Step 3: Cross multiply
    1,217,957,345.66x = 1,680,797,261.39 × 661,047,068.54
  4. Step 4: Simplify right side
    1,217,957,345.66x = 1,111,086,102,440,210,304
  5. Step 5: Solve for x
    x = 1,111,086,102,440,210,304/1,217,957,345.66
  6. Step 6: Final answer
    x = 912,253,706.10

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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.