Home / 708,685,020.12-977,993,956.08-411,396,137.40

Finding the Fourth Proportional to 708,685,020.12, 977,993,956.08 and 411,396,137.40

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Solution

The fourth proportional to 708,685,020.12, 977,993,956.08 and 411,396,137.40 is: 567,731,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,685,020.12 : 977,993,956.08 = 411,396,137.40 : x
  2. Step 2: Convert to fraction form
    708,685,020.12/977,993,956.08 = 411,396,137.40/x
  3. Step 3: Cross multiply
    708,685,020.12x = 977,993,956.08 × 411,396,137.40
  4. Step 4: Simplify right side
    708,685,020.12x = 402,342,935,931,857,216
  5. Step 5: Solve for x
    x = 402,342,935,931,857,216/708,685,020.12
  6. Step 6: Final answer
    x = 567,731,678.40

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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.