Home / 12,780,119,943.36-17,636,227,176.51-7,141,382,129.88

Finding the Fourth Proportional to 12,780,119,943.36, 17,636,227,176.51 and 7,141,382,129.88

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Solution

The fourth proportional to 12,780,119,943.36, 17,636,227,176.51 and 7,141,382,129.88 is: 9,854,918,275.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,119,943.36 : 17,636,227,176.51 = 7,141,382,129.88 : x
  2. Step 2: Convert to fraction form
    12,780,119,943.36/17,636,227,176.51 = 7,141,382,129.88/x
  3. Step 3: Cross multiply
    12,780,119,943.36x = 17,636,227,176.51 × 7,141,382,129.88
  4. Step 4: Simplify right side
    12,780,119,943.36x = 125,947,037,596,832,514,048
  5. Step 5: Solve for x
    x = 125,947,037,596,832,514,048/12,780,119,943.36
  6. Step 6: Final answer
    x = 9,854,918,275.81

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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.