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Finding the Fourth Proportional to 875,419.60, 1,312,400.40 and 370,368.40

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Solution

The fourth proportional to 875,419.60, 1,312,400.40 and 370,368.40 is: 555,244.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,419.60 : 1,312,400.40 = 370,368.40 : x
  2. Step 2: Convert to fraction form
    875,419.60/1,312,400.40 = 370,368.40/x
  3. Step 3: Cross multiply
    875,419.60x = 1,312,400.40 × 370,368.40
  4. Step 4: Simplify right side
    875,419.60x = 486,071,636,307.36
  5. Step 5: Solve for x
    x = 486,071,636,307.36/875,419.60
  6. Step 6: Final answer
    x = 555,244.18

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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.