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Finding the Fourth Proportional to 603,802.80, 904,667.40 and 393,332.40

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Solution

The fourth proportional to 603,802.80, 904,667.40 and 393,332.40 is: 589,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,802.80 : 904,667.40 = 393,332.40 : x
  2. Step 2: Convert to fraction form
    603,802.80/904,667.40 = 393,332.40/x
  3. Step 3: Cross multiply
    603,802.80x = 904,667.40 × 393,332.40
  4. Step 4: Simplify right side
    603,802.80x = 355,834,999,643.76
  5. Step 5: Solve for x
    x = 355,834,999,643.76/603,802.80
  6. Step 6: Final answer
    x = 589,323.20

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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.