Home / 390,889,197.89-586,333,301.69-99,756,327.20

Finding the Fourth Proportional to 390,889,197.89, 586,333,301.69 and 99,756,327.20

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Solution

The fourth proportional to 390,889,197.89, 586,333,301.69 and 99,756,327.20 is: 149,634,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,889,197.89 : 586,333,301.69 = 99,756,327.20 : x
  2. Step 2: Convert to fraction form
    390,889,197.89/586,333,301.69 = 99,756,327.20/x
  3. Step 3: Cross multiply
    390,889,197.89x = 586,333,301.69 × 99,756,327.20
  4. Step 4: Simplify right side
    390,889,197.89x = 58,490,456,688,400,040
  5. Step 5: Solve for x
    x = 58,490,456,688,400,040/390,889,197.89
  6. Step 6: Final answer
    x = 149,634,364.43

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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.