Home / 478,909,401.48-660,769,902.62-280,564,271.60

Finding the Fourth Proportional to 478,909,401.48, 660,769,902.62 and 280,564,271.60

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Solution

The fourth proportional to 478,909,401.48, 660,769,902.62 and 280,564,271.60 is: 387,105,422.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,909,401.48 : 660,769,902.62 = 280,564,271.60 : x
  2. Step 2: Convert to fraction form
    478,909,401.48/660,769,902.62 = 280,564,271.60/x
  3. Step 3: Cross multiply
    478,909,401.48x = 660,769,902.62 × 280,564,271.60
  4. Step 4: Simplify right side
    478,909,401.48x = 185,388,426,423,783,264
  5. Step 5: Solve for x
    x = 185,388,426,423,783,264/478,909,401.48
  6. Step 6: Final answer
    x = 387,105,422.97

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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.