Home / 686,260.80-1,029,795.60-286,870.80

Finding the Fourth Proportional to 686,260.80, 1,029,795.60 and 286,870.80

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Solution

The fourth proportional to 686,260.80, 1,029,795.60 and 286,870.80 is: 430,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,260.80 : 1,029,795.60 = 286,870.80 : x
  2. Step 2: Convert to fraction form
    686,260.80/1,029,795.60 = 286,870.80/x
  3. Step 3: Cross multiply
    686,260.80x = 1,029,795.60 × 286,870.80
  4. Step 4: Simplify right side
    686,260.80x = 295,418,287,608.48
  5. Step 5: Solve for x
    x = 295,418,287,608.48/686,260.80
  6. Step 6: Final answer
    x = 430,475.25

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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.