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Finding the Fourth Proportional to 586,448.40, 879,283.80 and 212,422.80

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Solution

The fourth proportional to 586,448.40, 879,283.80 and 212,422.80 is: 318,493.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,448.40 : 879,283.80 = 212,422.80 : x
  2. Step 2: Convert to fraction form
    586,448.40/879,283.80 = 212,422.80/x
  3. Step 3: Cross multiply
    586,448.40x = 879,283.80 × 212,422.80
  4. Step 4: Simplify right side
    586,448.40x = 186,779,926,790.64
  5. Step 5: Solve for x
    x = 186,779,926,790.64/586,448.40
  6. Step 6: Final answer
    x = 318,493.37

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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.