Home / 1,020,303.76-1,407,957.78-561,401.50

Finding the Fourth Proportional to 1,020,303.76, 1,407,957.78 and 561,401.50

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Solution

The fourth proportional to 1,020,303.76, 1,407,957.78 and 561,401.50 is: 774,700.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,303.76 : 1,407,957.78 = 561,401.50 : x
  2. Step 2: Convert to fraction form
    1,020,303.76/1,407,957.78 = 561,401.50/x
  3. Step 3: Cross multiply
    1,020,303.76x = 1,407,957.78 × 561,401.50
  4. Step 4: Simplify right side
    1,020,303.76x = 790,429,609,628.67
  5. Step 5: Solve for x
    x = 790,429,609,628.67/1,020,303.76
  6. Step 6: Final answer
    x = 774,700.28

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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.