Home / 1,389,075,117.60-1,916,853,266.16-824,584,128.24

Finding the Fourth Proportional to 1,389,075,117.60, 1,916,853,266.16 and 824,584,128.24

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Solution

The fourth proportional to 1,389,075,117.60, 1,916,853,266.16 and 824,584,128.24 is: 1,137,884,308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,075,117.60 : 1,916,853,266.16 = 824,584,128.24 : x
  2. Step 2: Convert to fraction form
    1,389,075,117.60/1,916,853,266.16 = 824,584,128.24/x
  3. Step 3: Cross multiply
    1,389,075,117.60x = 1,916,853,266.16 × 824,584,128.24
  4. Step 4: Simplify right side
    1,389,075,117.60x = 1,580,606,779,440,540,416
  5. Step 5: Solve for x
    x = 1,580,606,779,440,540,416/1,389,075,117.60
  6. Step 6: Final answer
    x = 1,137,884,308.35

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Double scale
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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.