Home / 719,554,799.36-992,988,843.72-389,529,937.28

Finding the Fourth Proportional to 719,554,799.36, 992,988,843.72 and 389,529,937.28

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Solution

The fourth proportional to 719,554,799.36, 992,988,843.72 and 389,529,937.28 is: 537,553,056.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,554,799.36 : 992,988,843.72 = 389,529,937.28 : x
  2. Step 2: Convert to fraction form
    719,554,799.36/992,988,843.72 = 389,529,937.28/x
  3. Step 3: Cross multiply
    719,554,799.36x = 992,988,843.72 × 389,529,937.28
  4. Step 4: Simplify right side
    719,554,799.36x = 386,798,882,013,991,296
  5. Step 5: Solve for x
    x = 386,798,882,013,991,296/719,554,799.36
  6. Step 6: Final answer
    x = 537,553,056.92

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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.