Home / 657,315.12-907,094.94-355,509.12

Finding the Fourth Proportional to 657,315.12, 907,094.94 and 355,509.12

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Solution

The fourth proportional to 657,315.12, 907,094.94 and 355,509.12 is: 490,602.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,315.12 : 907,094.94 = 355,509.12 : x
  2. Step 2: Convert to fraction form
    657,315.12/907,094.94 = 355,509.12/x
  3. Step 3: Cross multiply
    657,315.12x = 907,094.94 × 355,509.12
  4. Step 4: Simplify right side
    657,315.12x = 322,480,523,875.85
  5. Step 5: Solve for x
    x = 322,480,523,875.85/657,315.12
  6. Step 6: Final answer
    x = 490,602.63

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Similar ratio
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1.5x scale

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.