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Finding the Fourth Proportional to 7,249,948.80, 10,878,859.80 and 2,990,547.60

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Solution

The fourth proportional to 7,249,948.80, 10,878,859.80 and 2,990,547.60 is: 4,487,445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,249,948.80 : 10,878,859.80 = 2,990,547.60 : x
  2. Step 2: Convert to fraction form
    7,249,948.80/10,878,859.80 = 2,990,547.60/x
  3. Step 3: Cross multiply
    7,249,948.80x = 10,878,859.80 × 2,990,547.60
  4. Step 4: Simplify right side
    7,249,948.80x = 32,533,748,065,626.48
  5. Step 5: Solve for x
    x = 32,533,748,065,626.48/7,249,948.80
  6. Step 6: Final answer
    x = 4,487,445.22

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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.