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Finding the Fourth Proportional to 841,038.80, 1,261,903.80 and 308,814.80

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Solution

The fourth proportional to 841,038.80, 1,261,903.80 and 308,814.80 is: 463,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,038.80 : 1,261,903.80 = 308,814.80 : x
  2. Step 2: Convert to fraction form
    841,038.80/1,261,903.80 = 308,814.80/x
  3. Step 3: Cross multiply
    841,038.80x = 1,261,903.80 × 308,814.80
  4. Step 4: Simplify right side
    841,038.80x = 389,694,569,616.24
  5. Step 5: Solve for x
    x = 389,694,569,616.24/841,038.80
  6. Step 6: Final answer
    x = 463,349.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.