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Finding the Fourth Proportional to 868,973.80, 1,303,460.70 and 307,935.40

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Solution

The fourth proportional to 868,973.80, 1,303,460.70 and 307,935.40 is: 461,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,973.80 : 1,303,460.70 = 307,935.40 : x
  2. Step 2: Convert to fraction form
    868,973.80/1,303,460.70 = 307,935.40/x
  3. Step 3: Cross multiply
    868,973.80x = 1,303,460.70 × 307,935.40
  4. Step 4: Simplify right side
    868,973.80x = 401,381,692,038.78
  5. Step 5: Solve for x
    x = 401,381,692,038.78/868,973.80
  6. Step 6: Final answer
    x = 461,903.10

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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.