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Finding the Fourth Proportional to 826,542.40, 1,237,448.40 and 508,860.40

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Solution

The fourth proportional to 826,542.40, 1,237,448.40 and 508,860.40 is: 761,834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,542.40 : 1,237,448.40 = 508,860.40 : x
  2. Step 2: Convert to fraction form
    826,542.40/1,237,448.40 = 508,860.40/x
  3. Step 3: Cross multiply
    826,542.40x = 1,237,448.40 × 508,860.40
  4. Step 4: Simplify right side
    826,542.40x = 629,688,487,803.36
  5. Step 5: Solve for x
    x = 629,688,487,803.36/826,542.40
  6. Step 6: Final answer
    x = 761,834.47

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Double scale
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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.