Home / 910,685,466.86-1,256,745,679.89-492,997,444.61

Finding the Fourth Proportional to 910,685,466.86, 1,256,745,679.89 and 492,997,444.61

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Solution

The fourth proportional to 910,685,466.86, 1,256,745,679.89 and 492,997,444.61 is: 680,336,330.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,685,466.86 : 1,256,745,679.89 = 492,997,444.61 : x
  2. Step 2: Convert to fraction form
    910,685,466.86/1,256,745,679.89 = 492,997,444.61/x
  3. Step 3: Cross multiply
    910,685,466.86x = 1,256,745,679.89 × 492,997,444.61
  4. Step 4: Simplify right side
    910,685,466.86x = 619,572,408,710,427,136
  5. Step 5: Solve for x
    x = 619,572,408,710,427,136/910,685,466.86
  6. Step 6: Final answer
    x = 680,336,330.44

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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.