Home / 830,514,005.10-1,245,771,007.65-817,599,988.80

Finding the Fourth Proportional to 830,514,005.10, 1,245,771,007.65 and 817,599,988.80

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Solution

The fourth proportional to 830,514,005.10, 1,245,771,007.65 and 817,599,988.80 is: 1,226,399,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,514,005.10 : 1,245,771,007.65 = 817,599,988.80 : x
  2. Step 2: Convert to fraction form
    830,514,005.10/1,245,771,007.65 = 817,599,988.80/x
  3. Step 3: Cross multiply
    830,514,005.10x = 1,245,771,007.65 × 817,599,988.80
  4. Step 4: Simplify right side
    830,514,005.10x = 1,018,542,361,902,004,736
  5. Step 5: Solve for x
    x = 1,018,542,361,902,004,736/830,514,005.10
  6. Step 6: Final answer
    x = 1,226,399,983.20

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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.