Home / 916,923.80-1,375,385.70-384,267.80

Finding the Fourth Proportional to 916,923.80, 1,375,385.70 and 384,267.80

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Solution

The fourth proportional to 916,923.80, 1,375,385.70 and 384,267.80 is: 576,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,923.80 : 1,375,385.70 = 384,267.80 : x
  2. Step 2: Convert to fraction form
    916,923.80/1,375,385.70 = 384,267.80/x
  3. Step 3: Cross multiply
    916,923.80x = 1,375,385.70 × 384,267.80
  4. Step 4: Simplify right side
    916,923.80x = 528,516,437,090.46
  5. Step 5: Solve for x
    x = 528,516,437,090.46/916,923.80
  6. Step 6: Final answer
    x = 576,401.70

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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.