Home / 920,855.86-1,270,731.44-507,378.80

Finding the Fourth Proportional to 920,855.86, 1,270,731.44 and 507,378.80

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Solution

The fourth proportional to 920,855.86, 1,270,731.44 and 507,378.80 is: 700,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,855.86 : 1,270,731.44 = 507,378.80 : x
  2. Step 2: Convert to fraction form
    920,855.86/1,270,731.44 = 507,378.80/x
  3. Step 3: Cross multiply
    920,855.86x = 1,270,731.44 × 507,378.80
  4. Step 4: Simplify right side
    920,855.86x = 644,742,197,594.75
  5. Step 5: Solve for x
    x = 644,742,197,594.75/920,855.86
  6. Step 6: Final answer
    x = 700,155.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.