Home / 857,500.83-1,287,022.16-458,482.68

Finding the Fourth Proportional to 857,500.83, 1,287,022.16 and 458,482.68

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Solution

The fourth proportional to 857,500.83, 1,287,022.16 and 458,482.68 is: 688,136.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,500.83 : 1,287,022.16 = 458,482.68 : x
  2. Step 2: Convert to fraction form
    857,500.83/1,287,022.16 = 458,482.68/x
  3. Step 3: Cross multiply
    857,500.83x = 1,287,022.16 × 458,482.68
  4. Step 4: Simplify right side
    857,500.83x = 590,077,370,282.40
  5. Step 5: Solve for x
    x = 590,077,370,282.40/857,500.83
  6. Step 6: Final answer
    x = 688,136.21

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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.