Home / 657,353.20-907,147.36-355,547.20

Finding the Fourth Proportional to 657,353.20, 907,147.36 and 355,547.20

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Solution

The fourth proportional to 657,353.20, 907,147.36 and 355,547.20 is: 490,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,353.20 : 907,147.36 = 355,547.20 : x
  2. Step 2: Convert to fraction form
    657,353.20/907,147.36 = 355,547.20/x
  3. Step 3: Cross multiply
    657,353.20x = 907,147.36 × 355,547.20
  4. Step 4: Simplify right side
    657,353.20x = 322,533,703,835.39
  5. Step 5: Solve for x
    x = 322,533,703,835.39/657,353.20
  6. Step 6: Final answer
    x = 490,655.11

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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.