Home / 1,277,429.78-1,916,452.48-478,718.40

Finding the Fourth Proportional to 1,277,429.78, 1,916,452.48 and 478,718.40

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Solution

The fourth proportional to 1,277,429.78, 1,916,452.48 and 478,718.40 is: 718,192.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,429.78 : 1,916,452.48 = 478,718.40 : x
  2. Step 2: Convert to fraction form
    1,277,429.78/1,916,452.48 = 478,718.40/x
  3. Step 3: Cross multiply
    1,277,429.78x = 1,916,452.48 × 478,718.40
  4. Step 4: Simplify right side
    1,277,429.78x = 917,441,064,901.63
  5. Step 5: Solve for x
    x = 917,441,064,901.63/1,277,429.78
  6. Step 6: Final answer
    x = 718,192.95

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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.