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Finding the Fourth Proportional to 869,063.80, 1,303,595.70 and 570,465.40

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Solution

The fourth proportional to 869,063.80, 1,303,595.70 and 570,465.40 is: 855,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,063.80 : 1,303,595.70 = 570,465.40 : x
  2. Step 2: Convert to fraction form
    869,063.80/1,303,595.70 = 570,465.40/x
  3. Step 3: Cross multiply
    869,063.80x = 1,303,595.70 × 570,465.40
  4. Step 4: Simplify right side
    869,063.80x = 743,656,242,438.78
  5. Step 5: Solve for x
    x = 743,656,242,438.78/869,063.80
  6. Step 6: Final answer
    x = 855,698.10

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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.