Home / 939,810.40-1,296,939.52-510,090.64

Finding the Fourth Proportional to 939,810.40, 1,296,939.52 and 510,090.64

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Solution

The fourth proportional to 939,810.40, 1,296,939.52 and 510,090.64 is: 703,925.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,810.40 : 1,296,939.52 = 510,090.64 : x
  2. Step 2: Convert to fraction form
    939,810.40/1,296,939.52 = 510,090.64/x
  3. Step 3: Cross multiply
    939,810.40x = 1,296,939.52 × 510,090.64
  4. Step 4: Simplify right side
    939,810.40x = 661,556,712,275.63
  5. Step 5: Solve for x
    x = 661,556,712,275.63/939,810.40
  6. Step 6: Final answer
    x = 703,925.72

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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.