Home / 781,510.50-1,078,484.49-423,814.50

Finding the Fourth Proportional to 781,510.50, 1,078,484.49 and 423,814.50

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Solution

The fourth proportional to 781,510.50, 1,078,484.49 and 423,814.50 is: 584,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,510.50 : 1,078,484.49 = 423,814.50 : x
  2. Step 2: Convert to fraction form
    781,510.50/1,078,484.49 = 423,814.50/x
  3. Step 3: Cross multiply
    781,510.50x = 1,078,484.49 × 423,814.50
  4. Step 4: Simplify right side
    781,510.50x = 457,077,364,887.11
  5. Step 5: Solve for x
    x = 457,077,364,887.11/781,510.50
  6. Step 6: Final answer
    x = 584,864.01

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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.