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Finding the Fourth Proportional to 648,858.40, 972,826.80 and 249,344.80

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Solution

The fourth proportional to 648,858.40, 972,826.80 and 249,344.80 is: 373,840.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,858.40 : 972,826.80 = 249,344.80 : x
  2. Step 2: Convert to fraction form
    648,858.40/972,826.80 = 249,344.80/x
  3. Step 3: Cross multiply
    648,858.40x = 972,826.80 × 249,344.80
  4. Step 4: Simplify right side
    648,858.40x = 242,569,303,880.64
  5. Step 5: Solve for x
    x = 242,569,303,880.64/648,858.40
  6. Step 6: Final answer
    x = 373,840.12

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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.