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Finding the Fourth Proportional to 425,435.60, 637,570.20 and 346,703.60

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Solution

The fourth proportional to 425,435.60, 637,570.20 and 346,703.60 is: 519,580.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,435.60 : 637,570.20 = 346,703.60 : x
  2. Step 2: Convert to fraction form
    425,435.60/637,570.20 = 346,703.60/x
  3. Step 3: Cross multiply
    425,435.60x = 637,570.20 × 346,703.60
  4. Step 4: Simplify right side
    425,435.60x = 221,047,883,592.72
  5. Step 5: Solve for x
    x = 221,047,883,592.72/425,435.60
  6. Step 6: Final answer
    x = 519,580.13

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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.