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Finding the Fourth Proportional to 649,226.40, 978,271.05 and 533,490.36

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Solution

The fourth proportional to 649,226.40, 978,271.05 and 533,490.36 is: 803,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,226.40 : 978,271.05 = 533,490.36 : x
  2. Step 2: Convert to fraction form
    649,226.40/978,271.05 = 533,490.36/x
  3. Step 3: Cross multiply
    649,226.40x = 978,271.05 × 533,490.36
  4. Step 4: Simplify right side
    649,226.40x = 521,898,174,642.08
  5. Step 5: Solve for x
    x = 521,898,174,642.08/649,226.40
  6. Step 6: Final answer
    x = 803,877.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.