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Finding the Fourth Proportional to 570,611.42, 855,596.48 and 390,899.48

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Solution

The fourth proportional to 570,611.42, 855,596.48 and 390,899.48 is: 586,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,611.42 : 855,596.48 = 390,899.48 : x
  2. Step 2: Convert to fraction form
    570,611.42/855,596.48 = 390,899.48/x
  3. Step 3: Cross multiply
    570,611.42x = 855,596.48 × 390,899.48
  4. Step 4: Simplify right side
    570,611.42x = 334,452,216,692.40
  5. Step 5: Solve for x
    x = 334,452,216,692.40/570,611.42
  6. Step 6: Final answer
    x = 586,129.55

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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.