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Finding the Fourth Proportional to 455,802.40, 683,703.60 and 429,558.40

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Solution

The fourth proportional to 455,802.40, 683,703.60 and 429,558.40 is: 644,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,802.40 : 683,703.60 = 429,558.40 : x
  2. Step 2: Convert to fraction form
    455,802.40/683,703.60 = 429,558.40/x
  3. Step 3: Cross multiply
    455,802.40x = 683,703.60 × 429,558.40
  4. Step 4: Simplify right side
    455,802.40x = 293,690,624,490.24
  5. Step 5: Solve for x
    x = 293,690,624,490.24/455,802.40
  6. Step 6: Final answer
    x = 644,337.60

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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.