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Finding the Fourth Proportional to 406,953.60, 610,430.40 and 300,665.40

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Solution

The fourth proportional to 406,953.60, 610,430.40 and 300,665.40 is: 450,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,953.60 : 610,430.40 = 300,665.40 : x
  2. Step 2: Convert to fraction form
    406,953.60/610,430.40 = 300,665.40/x
  3. Step 3: Cross multiply
    406,953.60x = 610,430.40 × 300,665.40
  4. Step 4: Simplify right side
    406,953.60x = 183,535,300,388.16
  5. Step 5: Solve for x
    x = 183,535,300,388.16/406,953.60
  6. Step 6: Final answer
    x = 450,998.10

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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.