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Finding the Fourth Proportional to 425,724.60, 637,809.30 and 346,409.40

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Solution

The fourth proportional to 425,724.60, 637,809.30 and 346,409.40 is: 518,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,724.60 : 637,809.30 = 346,409.40 : x
  2. Step 2: Convert to fraction form
    425,724.60/637,809.30 = 346,409.40/x
  3. Step 3: Cross multiply
    425,724.60x = 637,809.30 × 346,409.40
  4. Step 4: Simplify right side
    425,724.60x = 220,943,136,927.42
  5. Step 5: Solve for x
    x = 220,943,136,927.42/425,724.60
  6. Step 6: Final answer
    x = 518,981.37

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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.