Home / 996,939.70-1,495,603.95-428,319.70

Finding the Fourth Proportional to 996,939.70, 1,495,603.95 and 428,319.70

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Solution

The fourth proportional to 996,939.70, 1,495,603.95 and 428,319.70 is: 642,563.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,939.70 : 1,495,603.95 = 428,319.70 : x
  2. Step 2: Convert to fraction form
    996,939.70/1,495,603.95 = 428,319.70/x
  3. Step 3: Cross multiply
    996,939.70x = 1,495,603.95 × 428,319.70
  4. Step 4: Simplify right side
    996,939.70x = 640,596,635,182.82
  5. Step 5: Solve for x
    x = 640,596,635,182.82/996,939.70
  6. Step 6: Final answer
    x = 642,563.07

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1.5x scale

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.