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Finding the Fourth Proportional to 623,913.40, 935,870.10 and 476,457.40

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Solution

The fourth proportional to 623,913.40, 935,870.10 and 476,457.40 is: 714,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,913.40 : 935,870.10 = 476,457.40 : x
  2. Step 2: Convert to fraction form
    623,913.40/935,870.10 = 476,457.40/x
  3. Step 3: Cross multiply
    623,913.40x = 935,870.10 × 476,457.40
  4. Step 4: Simplify right side
    623,913.40x = 445,902,234,583.74
  5. Step 5: Solve for x
    x = 445,902,234,583.74/623,913.40
  6. Step 6: Final answer
    x = 714,686.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.