Home / 975,699.80-1,463,549.70-640,856.60

Finding the Fourth Proportional to 975,699.80, 1,463,549.70 and 640,856.60

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Solution

The fourth proportional to 975,699.80, 1,463,549.70 and 640,856.60 is: 961,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    975,699.80 : 1,463,549.70 = 640,856.60 : x
  2. Step 2: Convert to fraction form
    975,699.80/1,463,549.70 = 640,856.60/x
  3. Step 3: Cross multiply
    975,699.80x = 1,463,549.70 × 640,856.60
  4. Step 4: Simplify right side
    975,699.80x = 937,925,484,673.02
  5. Step 5: Solve for x
    x = 937,925,484,673.02/975,699.80
  6. Step 6: Final answer
    x = 961,284.90

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Double scale
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Similar ratio
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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.