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Finding the Fourth Proportional to 630,779.60, 946,860.60 and 394,389.20

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Solution

The fourth proportional to 630,779.60, 946,860.60 and 394,389.20 is: 592,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,779.60 : 946,860.60 = 394,389.20 : x
  2. Step 2: Convert to fraction form
    630,779.60/946,860.60 = 394,389.20/x
  3. Step 3: Cross multiply
    630,779.60x = 946,860.60 × 394,389.20
  4. Step 4: Simplify right side
    630,779.60x = 373,431,594,545.52
  5. Step 5: Solve for x
    x = 373,431,594,545.52/630,779.60
  6. Step 6: Final answer
    x = 592,015.97

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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.