Home / 910,685,465.86-1,256,745,678.51-492,997,443.61

Finding the Fourth Proportional to 910,685,465.86, 1,256,745,678.51 and 492,997,443.61

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Solution

The fourth proportional to 910,685,465.86, 1,256,745,678.51 and 492,997,443.61 is: 680,336,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,685,465.86 : 1,256,745,678.51 = 492,997,443.61 : x
  2. Step 2: Convert to fraction form
    910,685,465.86/1,256,745,678.51 = 492,997,443.61/x
  3. Step 3: Cross multiply
    910,685,465.86x = 1,256,745,678.51 × 492,997,443.61
  4. Step 4: Simplify right side
    910,685,465.86x = 619,572,406,773,344,896
  5. Step 5: Solve for x
    x = 619,572,406,773,344,896/910,685,465.86
  6. Step 6: Final answer
    x = 680,336,329.06

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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.