Home / 905,784.36-1,249,955.40-518,586.93

Finding the Fourth Proportional to 905,784.36, 1,249,955.40 and 518,586.93

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Solution

The fourth proportional to 905,784.36, 1,249,955.40 and 518,586.93 is: 715,634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,784.36 : 1,249,955.40 = 518,586.93 : x
  2. Step 2: Convert to fraction form
    905,784.36/1,249,955.40 = 518,586.93/x
  3. Step 3: Cross multiply
    905,784.36x = 1,249,955.40 × 518,586.93
  4. Step 4: Simplify right side
    905,784.36x = 648,210,533,522.92
  5. Step 5: Solve for x
    x = 648,210,533,522.92/905,784.36
  6. Step 6: Final answer
    x = 715,634.50

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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.