Home / 688,421.12-950,157.81-439,904.21

Finding the Fourth Proportional to 688,421.12, 950,157.81 and 439,904.21

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Solution

The fourth proportional to 688,421.12, 950,157.81 and 439,904.21 is: 607,155.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,421.12 : 950,157.81 = 439,904.21 : x
  2. Step 2: Convert to fraction form
    688,421.12/950,157.81 = 439,904.21/x
  3. Step 3: Cross multiply
    688,421.12x = 950,157.81 × 439,904.21
  4. Step 4: Simplify right side
    688,421.12x = 417,978,416,032.59
  5. Step 5: Solve for x
    x = 417,978,416,032.59/688,421.12
  6. Step 6: Final answer
    x = 607,155.14

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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.