Home / 717,553,668.30-1,076,330,502.45-390,186,012.30

Finding the Fourth Proportional to 717,553,668.30, 1,076,330,502.45 and 390,186,012.30

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Solution

The fourth proportional to 717,553,668.30, 1,076,330,502.45 and 390,186,012.30 is: 585,279,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,553,668.30 : 1,076,330,502.45 = 390,186,012.30 : x
  2. Step 2: Convert to fraction form
    717,553,668.30/1,076,330,502.45 = 390,186,012.30/x
  3. Step 3: Cross multiply
    717,553,668.30x = 1,076,330,502.45 × 390,186,012.30
  4. Step 4: Simplify right side
    717,553,668.30x = 419,969,106,667,820,928
  5. Step 5: Solve for x
    x = 419,969,106,667,820,928/717,553,668.30
  6. Step 6: Final answer
    x = 585,279,018.45

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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.