Home / 486,070.12-670,899.90-290,047.60

Finding the Fourth Proportional to 486,070.12, 670,899.90 and 290,047.60

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Solution

The fourth proportional to 486,070.12, 670,899.90 and 290,047.60 is: 400,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,070.12 : 670,899.90 = 290,047.60 : x
  2. Step 2: Convert to fraction form
    486,070.12/670,899.90 = 290,047.60/x
  3. Step 3: Cross multiply
    486,070.12x = 670,899.90 × 290,047.60
  4. Step 4: Simplify right side
    486,070.12x = 194,592,905,835.24
  5. Step 5: Solve for x
    x = 194,592,905,835.24/486,070.12
  6. Step 6: Final answer
    x = 400,339.16

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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.