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Finding the Fourth Proportional to 1,572,480, 2,358,720 and 521,856

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Solution

The fourth proportional to 1,572,480, 2,358,720 and 521,856 is: 782,784

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572,480 : 2,358,720 = 521,856 : x
  2. Step 2: Convert to fraction form
    1,572,480/2,358,720 = 521,856/x
  3. Step 3: Cross multiply
    1,572,480x = 2,358,720 × 521,856
  4. Step 4: Simplify right side
    1,572,480x = 1,230,912,184,320
  5. Step 5: Solve for x
    x = 1,230,912,184,320/1,572,480
  6. Step 6: Final answer
    x = 782,784

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.