Home / 708,217,446.61-977,295,836.30-390,681,365.28

Finding the Fourth Proportional to 708,217,446.61, 977,295,836.30 and 390,681,365.28

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Solution

The fourth proportional to 708,217,446.61, 977,295,836.30 and 390,681,365.28 is: 539,115,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,217,446.61 : 977,295,836.30 = 390,681,365.28 : x
  2. Step 2: Convert to fraction form
    708,217,446.61/977,295,836.30 = 390,681,365.28/x
  3. Step 3: Cross multiply
    708,217,446.61x = 977,295,836.30 × 390,681,365.28
  4. Step 4: Simplify right side
    708,217,446.61x = 381,811,271,603,256,832
  5. Step 5: Solve for x
    x = 381,811,271,603,256,832/708,217,446.61
  6. Step 6: Final answer
    x = 539,115,879.50

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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.