Home / 390,889,199.90-586,333,304.69-99,756,329.20

Finding the Fourth Proportional to 390,889,199.90, 586,333,304.69 and 99,756,329.20

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Solution

The fourth proportional to 390,889,199.90, 586,333,304.69 and 99,756,329.20 is: 149,634,367.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,889,199.90 : 586,333,304.69 = 99,756,329.20 : x
  2. Step 2: Convert to fraction form
    390,889,199.90/586,333,304.69 = 99,756,329.20/x
  3. Step 3: Cross multiply
    390,889,199.90x = 586,333,304.69 × 99,756,329.20
  4. Step 4: Simplify right side
    390,889,199.90x = 58,490,458,163,579,552
  5. Step 5: Solve for x
    x = 58,490,458,163,579,552/390,889,199.90
  6. Step 6: Final answer
    x = 149,634,367.43

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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.