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Finding the Fourth Proportional to 585,030.40, 877,545.60 and 478,742.20

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Solution

The fourth proportional to 585,030.40, 877,545.60 and 478,742.20 is: 718,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,030.40 : 877,545.60 = 478,742.20 : x
  2. Step 2: Convert to fraction form
    585,030.40/877,545.60 = 478,742.20/x
  3. Step 3: Cross multiply
    585,030.40x = 877,545.60 × 478,742.20
  4. Step 4: Simplify right side
    585,030.40x = 420,118,111,144.32
  5. Step 5: Solve for x
    x = 420,118,111,144.32/585,030.40
  6. Step 6: Final answer
    x = 718,113.30

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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.