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Finding the Fourth Proportional to 710,550.40, 980,530.32 and 388,271.68

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Solution

The fourth proportional to 710,550.40, 980,530.32 and 388,271.68 is: 535,798.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,550.40 : 980,530.32 = 388,271.68 : x
  2. Step 2: Convert to fraction form
    710,550.40/980,530.32 = 388,271.68/x
  3. Step 3: Cross multiply
    710,550.40x = 980,530.32 × 388,271.68
  4. Step 4: Simplify right side
    710,550.40x = 380,712,154,637.34
  5. Step 5: Solve for x
    x = 380,712,154,637.34/710,550.40
  6. Step 6: Final answer
    x = 535,798.94

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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.