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Finding the Fourth Proportional to 710,298.54, 980,235.54 and 388,038.60

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Solution

The fourth proportional to 710,298.54, 980,235.54 and 388,038.60 is: 535,506.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,298.54 : 980,235.54 = 388,038.60 : x
  2. Step 2: Convert to fraction form
    710,298.54/980,235.54 = 388,038.60/x
  3. Step 3: Cross multiply
    710,298.54x = 980,235.54 × 388,038.60
  4. Step 4: Simplify right side
    710,298.54x = 380,369,226,611.84
  5. Step 5: Solve for x
    x = 380,369,226,611.84/710,298.54
  6. Step 6: Final answer
    x = 535,506.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.