Home / 978,277,911.24-1,349,508,965.40-581,518,689.24

Finding the Fourth Proportional to 978,277,911.24, 1,349,508,965.40 and 581,518,689.24

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Solution

The fourth proportional to 978,277,911.24, 1,349,508,965.40 and 581,518,689.24 is: 802,189,925.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,277,911.24 : 1,349,508,965.40 = 581,518,689.24 : x
  2. Step 2: Convert to fraction form
    978,277,911.24/1,349,508,965.40 = 581,518,689.24/x
  3. Step 3: Cross multiply
    978,277,911.24x = 1,349,508,965.40 × 581,518,689.24
  4. Step 4: Simplify right side
    978,277,911.24x = 784,764,684,677,036,544
  5. Step 5: Solve for x
    x = 784,764,684,677,036,544/978,277,911.24
  6. Step 6: Final answer
    x = 802,189,925.44

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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.