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Finding the Fourth Proportional to 657,353.70, 907,148.07 and 355,547.70

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Solution

The fourth proportional to 657,353.70, 907,148.07 and 355,547.70 is: 490,655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,353.70 : 907,148.07 = 355,547.70 : x
  2. Step 2: Convert to fraction form
    657,353.70/907,148.07 = 355,547.70/x
  3. Step 3: Cross multiply
    657,353.70x = 907,148.07 × 355,547.70
  4. Step 4: Simplify right side
    657,353.70x = 322,534,409,847.94
  5. Step 5: Solve for x
    x = 322,534,409,847.94/657,353.70
  6. Step 6: Final answer
    x = 490,655.81

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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.