Home / 1,294,128,001.80-1,941,192,002.70-420,727,681.80

Finding the Fourth Proportional to 1,294,128,001.80, 1,941,192,002.70 and 420,727,681.80

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Solution

The fourth proportional to 1,294,128,001.80, 1,941,192,002.70 and 420,727,681.80 is: 631,091,522.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,128,001.80 : 1,941,192,002.70 = 420,727,681.80 : x
  2. Step 2: Convert to fraction form
    1,294,128,001.80/1,941,192,002.70 = 420,727,681.80/x
  3. Step 3: Cross multiply
    1,294,128,001.80x = 1,941,192,002.70 × 420,727,681.80
  4. Step 4: Simplify right side
    1,294,128,001.80x = 816,713,211,224,670,336
  5. Step 5: Solve for x
    x = 816,713,211,224,670,336/1,294,128,001.80
  6. Step 6: Final answer
    x = 631,091,522.70

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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.