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Finding the Fourth Proportional to 525,740.80, 788,611.20 and 357,779.20

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Solution

The fourth proportional to 525,740.80, 788,611.20 and 357,779.20 is: 536,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,740.80 : 788,611.20 = 357,779.20 : x
  2. Step 2: Convert to fraction form
    525,740.80/788,611.20 = 357,779.20/x
  3. Step 3: Cross multiply
    525,740.80x = 788,611.20 × 357,779.20
  4. Step 4: Simplify right side
    525,740.80x = 282,148,684,247.04
  5. Step 5: Solve for x
    x = 282,148,684,247.04/525,740.80
  6. Step 6: Final answer
    x = 536,668.80

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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.