Home / 768,918.51-1,061,156.70-429,386.76

Finding the Fourth Proportional to 768,918.51, 1,061,156.70 and 429,386.76

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Solution

The fourth proportional to 768,918.51, 1,061,156.70 and 429,386.76 is: 592,581.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,918.51 : 1,061,156.70 = 429,386.76 : x
  2. Step 2: Convert to fraction form
    768,918.51/1,061,156.70 = 429,386.76/x
  3. Step 3: Cross multiply
    768,918.51x = 1,061,156.70 × 429,386.76
  4. Step 4: Simplify right side
    768,918.51x = 455,646,637,265.29
  5. Step 5: Solve for x
    x = 455,646,637,265.29/768,918.51
  6. Step 6: Final answer
    x = 592,581.18

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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.