Home / 753,485.02-1,039,820.64-409,327.72

Finding the Fourth Proportional to 753,485.02, 1,039,820.64 and 409,327.72

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Solution

The fourth proportional to 753,485.02, 1,039,820.64 and 409,327.72 is: 564,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,485.02 : 1,039,820.64 = 409,327.72 : x
  2. Step 2: Convert to fraction form
    753,485.02/1,039,820.64 = 409,327.72/x
  3. Step 3: Cross multiply
    753,485.02x = 1,039,820.64 × 409,327.72
  4. Step 4: Simplify right side
    753,485.02x = 425,627,411,780.14
  5. Step 5: Solve for x
    x = 425,627,411,780.14/753,485.02
  6. Step 6: Final answer
    x = 564,878.40

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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.