Home / 921,349.40-1,271,406.32-507,868.10

Finding the Fourth Proportional to 921,349.40, 1,271,406.32 and 507,868.10

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Solution

The fourth proportional to 921,349.40, 1,271,406.32 and 507,868.10 is: 700,827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,349.40 : 1,271,406.32 = 507,868.10 : x
  2. Step 2: Convert to fraction form
    921,349.40/1,271,406.32 = 507,868.10/x
  3. Step 3: Cross multiply
    921,349.40x = 1,271,406.32 × 507,868.10
  4. Step 4: Simplify right side
    921,349.40x = 645,706,703,170.02
  5. Step 5: Solve for x
    x = 645,706,703,170.02/921,349.40
  6. Step 6: Final answer
    x = 700,827.19

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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.