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Finding the Fourth Proportional to 458,779.60, 686,808.60 and 340,973.20

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Solution

The fourth proportional to 458,779.60, 686,808.60 and 340,973.20 is: 510,448.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,779.60 : 686,808.60 = 340,973.20 : x
  2. Step 2: Convert to fraction form
    458,779.60/686,808.60 = 340,973.20/x
  3. Step 3: Cross multiply
    458,779.60x = 686,808.60 × 340,973.20
  4. Step 4: Simplify right side
    458,779.60x = 234,183,326,129.52
  5. Step 5: Solve for x
    x = 234,183,326,129.52/458,779.60
  6. Step 6: Final answer
    x = 510,448.43

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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.